Field special transmission cable

Abstract

The utility model belongs to the technical field of transmission cables, and particularly relates to a field special transmission cable, which comprises a cable core, a plurality of buffer sleeves are arranged outside the cable core, a U-shaped strip for connecting the buffer sleeves is arranged between two adjacent buffer sleeves, a pressing groove for locking the U-shaped strip between the buffer sleeves is embedded in the inner side of the U-shaped strip, and the U-shaped strip is fixedly connected with the cable core. The buffer sleeves are coated with wear-resistant layers, and the plurality of buffer sleeves form a circular buffer layer between the cable core and the wear-resistant layers; firstly, the buffering sleeve located between the cable core and the wear-resistant layer can play a buffering role after the cable is pressed, so that the cable core is protected, durability is improved, secondly, the buffering sleeve can be stably connected through the U-shaped strip and the pressing groove, forming work of the wear-resistant layer is facilitated, and finally, the buffering sleeve is made of a flame-retardant material, so that the service life of the cable is prolonged. And the cable core can be more effectively protected under the condition of high temperature or existence of a fire source.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission cables, in particular to a special transmission cable for field use. Background Art

[0002] Field special transmission cables refer to cables with special properties and structures used in field environments. They are usually used in military communications, field wiring, oil fields, mines, ports and other harsh or severe conditions.

[0003] A common type of special transmission cable used in the field is the field optical cable, which is specially designed for use in field operations and complex environments where rapid wiring or repeated retraction and extension is required. Field optical cables are characterized by light weight, easy carrying, resistance to tension and pressure, good flexibility, oil resistance, wear resistance, flame retardancy, and a wide range of applicable temperatures. It adopts a compact all-dielectric wiring structure with tight-buffered optical fibers inside, which has an extremely high strength-to-weight ratio and is convenient for rapid wiring or repeated retraction and extension. In addition, the field optical cable also uses a specially made high-strength, flexible fiberglass reinforced plastic (FRP) central reinforcement element, as well as a large area of ​​aramid reinforcing fibers to ensure the reliability and service life of the optical cable under various harsh conditions;

[0004] Although the special transmission cables for outdoor use have good performance in all aspects, they are laid outdoors and will be affected by the outdoor environment or things. The cables may be hit or compressed. The general special transmission cables for outdoor use are solid structures inside, and there is no buffer between the cable core and the outside. When the cable is subjected to external force, it is easy to cause the internal cable core to be compressed, which can easily cause the cable core to deform or even break.

[0005] In order to solve the above problems, this application proposes a special transmission cable for field use. Utility Model Content

[0006] The purpose of the utility model is to provide a special transmission cable for field use, which solves the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a special transmission cable for outdoor use, comprising a cable core, a plurality of buffer sleeves are arranged on the outside of the cable core, a U-shaped bar for connecting the buffer sleeves is arranged between two adjacent buffer sleeves, a compression groove for locking the U-shaped bar between the buffer sleeves is embedded on the inner side of the U-shaped bar, a wear-resistant layer is coated on the outside of the buffer sleeve, and a plurality of buffer sleeves are formed into a circular buffer layer between the cable core and the wear-resistant layer.

[0009] Furthermore, the buffer sleeves are multiple and distributed circumferentially, and contact surfaces of two adjacent buffer sleeves fit each other.

[0010] Furthermore, a V-shaped strip is formed on the outer ring inside the buffer sleeve, and an energy absorption strip is formed on the inner ring inside the buffer sleeve. The V-shaped strip and the energy absorption strip are opposite to each other and their front ends are in contact with each other.

[0011] Furthermore, a compressive deformation space for the V-shaped strip and the energy absorbing strip is formed inside the buffer sleeve, and two of the energy absorbing strips cooperate with one of the V-shaped strips.

[0012] Furthermore, an engaging groove is formed on the inner side of the top of the buffer sleeve, a clamping groove is formed on the outer side of the end of the buffer sleeve, and symmetrical clamping strips are formed on both sides of the U-shaped strip.

[0013] Furthermore, the U-shaped strip is embedded in the embedding grooves formed by two adjacent buffer sleeves, and the clamping strip is located in the clamping groove.

[0014] Furthermore, a positioning groove is formed on the inner side of the U-shaped strip, and a positioning strip matching with the positioning groove is formed on the outer side of the pressing groove, and the pressing groove fills the inner side of the U-shaped strip.

[0015] The utility model has the following beneficial effects:

[0016] The utility model arranges a plurality of buffer sleeves between the cable core and the wear-resistant layer, and the buffer sleeves can form a circumferential buffer cavity between the two. When the cable is pressurized, the pressure will not directly act on the cable core, thereby providing better protection for the transmission of the cable core.

[0017] The utility model connects a plurality of buffer sleeves by arranging a pressing groove and a U-shaped strip, which is convenient for positioning the plurality of U-shaped strips after assembly and also convenient for the molding of the wear-resistant layer;

[0018] The buffer sleeve provided in the utility model is formed of flame retardant material, which can effectively prevent burning when the cable is eroded by high temperature or fire source, and the surface area of ​​the internal structure of the buffer sleeve is large, so a better flame retardant effect can be achieved.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure from a side view;

[0023] Figure 3 It is a structural schematic diagram of the cross section of the utility model;

[0024] Figure 4 It is a schematic diagram of the structure of the buffer sleeve, the U-shaped strip and the pressing groove in the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] In the figure: 1, cable core; 2, buffer sleeve; 21, V-shaped strip; 22, energy absorption strip; 23, fitting groove; 24, clamping groove; 3, U-shaped strip; 31, clamping strip; 32, positioning groove; 4, pressing groove; 41, positioning strip; 5, wear-resistant layer. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] See also Figure 1-4 As shown, the utility model is a special transmission cable for outdoor use, including a cable core 1, a plurality of buffer sleeves 2 are arranged on the outside of the cable core 1, a U-shaped bar 3 for connecting the buffer sleeves 2 is arranged between two adjacent buffer sleeves 2, a compression groove 4 for locking the U-shaped bar 3 between the buffer sleeves 2 is embedded on the inner side of the U-shaped bar 3, the buffer sleeve 2 is coated with a wear-resistant layer 5, and the plurality of buffer sleeves 2 form a circular buffer layer between the cable core 1 and the wear-resistant layer 5.

[0030] The buffer sleeves 2 are multiple and distributed circumferentially, and the contact surfaces of two adjacent buffer sleeves 2 fit each other. In this embodiment, the buffer sleeves 2 distributed circumferentially can form a protective layer inside the cable core 1 .

[0031] Among them, the outer ring on the inner side of the buffer sleeve 2 is formed with a V-shaped strip 21, and the inner ring on the inner side of the buffer sleeve 2 is formed with an energy absorbing strip 22. The V-shaped strip 21 and the energy absorbing strip 22 are opposite to each other and the front ends of the two are in contact with each other. A compressive deformation space for the V-shaped strip 21 and the energy absorbing strip 22 is formed inside the buffer sleeve 2. Two energy absorbing strips 22 cooperate with one V-shaped strip 21. In this embodiment, the structures of the V-shaped strip 21 and the energy absorbing strip 22 are evenly distributed inside the buffer sleeve 2, and can effectively absorb energy after the outside of the buffer sleeve 2 is compressed, thereby avoiding direct pressure on the cable core 1.

[0032] Among them, an interlocking groove 23 is formed on the inner side of the top of the buffer sleeve 2, a clamping groove 24 is formed on the outer side of the end of the buffer sleeve 2, and symmetrical clamping strips 31 are formed on both sides of the U-shaped strip 3. The U-shaped strip 3 is interlocked in the interlocking groove 23 formed by two adjacent buffer sleeves 2, and the clamping strip 31 is located in the clamping groove 24. In this embodiment, a blocking structure is formed between the buffer sleeve 2 and the U-shaped strip 3 through the cooperation of the clamping groove 24 and the clamping strip 31, and then multiple buffer sleeves 2 can be reliably connected in cooperation with the clamping groove 4.

[0033] Among them, a positioning groove 32 is formed on the inner side of the U-shaped strip 3, and a positioning strip 41 cooperating with the positioning groove 32 is formed on the outside of the clamping groove 4. The clamping groove 4 fills the inner side of the U-shaped strip 3. In this embodiment, the positioning groove 32 and the positioning strip 41 can stabilize the clamping groove 4 inside the U-shaped strip 3. After the clamping groove 4 is located inside the U-shaped strip 3, the movement of the card strip 31 can be avoided, thereby avoiding the detachment of the buffer sleeve 2, thereby ensuring the reliability of the connection of multiple buffer sleeves 2.

[0034] It can be understood that, firstly, the buffer sleeve 2 located between the cable core 1 and the wear-resistant layer 5 can play a buffering role after the cable is compressed, thereby protecting the cable core 1 and improving durability; secondly, the U-shaped strip 3 and the compression groove 4 can stably connect the buffer sleeve 2 to facilitate the molding of the wear-resistant layer 5; finally, the buffer sleeve 2 is a flame retardant material, which can provide more effective protection for the cable core 1 under high temperature or fire conditions.

[0035] A specific application of this embodiment is: after the cable core 1 is formed, it is wrapped with multiple buffer sleeves 2 on the outside. After the buffer sleeve 2 wraps the cable core 1, the U-shaped bar 3 is embedded in the embedding groove 23. At this time, the clamping groove 4 is pressed into the U-shaped bar 3, and the positioning bar 41 is stuck in the positioning groove 32. At this time, the connection between the buffer sleeve 2, the U-shaped bar 3, and the clamping groove 4 forms a solid structure, and the multiple buffer sleeves 2 wrapped on the outside of the cable core 1 are also stably connected. Finally, the wear-resistant layer 5 is formed on the outside of the buffer sleeve 2.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A special transmission cable for field use, comprising a cable core (1), characterized in that: A plurality of buffer sleeves (2) are arranged outside the cable core (1), a U-shaped strip (3) for connecting the buffer sleeves (2) is arranged between two adjacent buffer sleeves (2), a clamping groove (4) for locking the U-shaped strip (3) between the buffer sleeves (2) is embedded inside the U-shaped strip (3), the buffer sleeve (2) is coated with a wear-resistant layer (5) outside, and a plurality of buffer sleeves (2) form a circular buffer layer between the cable core (1) and the wear-resistant layer (5).

2. A special transmission cable for outdoor use according to claim 1, characterized in that: The buffer sleeves (2) are multiple strips distributed around a circumference, and the contact surfaces of two adjacent buffer sleeves (2) fit each other.

3. A special transmission cable for outdoor use according to claim 1, characterized in that: The outer ring inside the buffer sleeve (2) is formed with a V-shaped strip (21), and the inner ring inside the buffer sleeve (2) is formed with an energy absorption strip (22). The V-shaped strip (21) and the energy absorption strip (22) are opposed to each other and their front ends are in contact with each other.

4. A special transmission cable for outdoor use according to claim 3, characterized in that: A compression deformation space for the V-shaped strip (21) and the energy absorbing strip (22) is formed inside the buffer sleeve (2), and two of the energy absorbing strips (22) cooperate with one of the V-shaped strips (21).

5. A special transmission cable for outdoor use according to claim 1, characterized in that: An engaging groove (23) is formed on the inner side of the top of the buffer sleeve (2), a clamping groove (24) is formed on the outer side of the end of the buffer sleeve (2), and symmetrical clamping strips (31) are formed on both sides of the U-shaped strip (3).

6. A special transmission cable for outdoor use according to claim 5, characterized in that: The U-shaped strip (3) is embedded in the embedding grooves (23) formed on two adjacent buffer sleeves (2), and the clamping strip (31) is located in the clamping groove (24).

7. A special transmission cable for outdoor use according to claim 1, characterized in that: The U-shaped strip (3) is formed with a positioning groove (32) on the inside, and the pressing groove (4) is formed with a positioning strip (41) that matches the positioning groove (32) on the outside, and the pressing groove (4) fills the inside of the U-shaped strip (3).

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